Onkyo HT-R520 Service Manual

MICROPROCESSOR CONNECTION DIAGRAMS-1
Q7008:MPD784225GC-XXX-8BT(MAIN MICROPROCESSOR)
TX-SR502/E/8250/HT-R520
Q7008
MPD784225GC
-XXX-8BT
MAIN MICRO
PRCESSOR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
41
MUTE 83
PDN 31
CL 84
DATA 85
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
70 71 72 73 74 75 76 77 78 79 80
X7001
12.5MHz
TUNER
UNIT
Q800 AK4588
DIR, 2CH A/D,
8CH D/A
CONVERTER
RL901
F901
POWER
TRANS.
FRONT-A
SPEAKERS
AC IN
Q203
LA7956
Q212
LA7956
S_VIDEO (C SIGNAL)
VIDEO SELECTOR SWITCH
Q213
LA7956
S_VIDEO (Y SIGNAL)
Q6701,6702
DC DETECTION
R6380,Q6303
THERMAL
DETECTION
CIRCUIT
Q7502
SUB-
MICRORPOCESSOR
MPD70232GC-XXX-8BT
39 40
7
8
9
10
59
60
61 62 63 64 65 66 67 68 69
Q301 BD3817KS
SELECTOR/
VOLUME/
TONE CONTROL
OUTPUT LEVEL
DETECTION
R7003,7004
DESTINATION
SET UP
RL6801
FRONT-B
Q701
CS494003CQZ
DSP
Q7002
TC74VHC541FT
Q7001
RESET
Q7003 TC74HCT7007AF
3
2
3
2
3
2
Q205
DRIVER
VIDEO
MUTE
Q201
COMPOSITE
C
Y
Q208
Q207
Q202
Q210
Q211
S-VIDEO
VIDEO-1 OUT
Q206
DRIVER
COMPOSITE
C
Y
S-VIDEO
OUT L
MONITOR OUT
Q306
DRIVER
Q921
RELAY
DRIVE
Q6601
RELAY
DRIVE
Q6602
RELAY
DRIVE
Q6901
RELAY
DRIVE
RL6901
RL6902
LOW
HIGH
T901
POWER
TRANS.
Q6603
RELAY
DRIVE
Q307
Q312
Q313
SUB WOOFER
PREOUT
OUT R
POWER
AMPLIFIER
CIRCUIT
Q308
RL6800
L
R
SURROUND
SPEAKERS
RL6804
RL6803
L
R
CENER
SPEAKER
L
R
+B
VOLTAGE
SELECTOR
AMPLIFIER
SECTION
P7501
PHONES
DETECTION
SWITCH
+5V
+5V
+5V
POWER AMPLIFIER
CIRCUIT
DESTINATION
SET UP
Q6070~6074
CURRENT
DETECTION
Q6703
GATE
CIRCUIT
R7080
R7180
R7179
R7079
R7178
R7078
POWER
FAILURE
DETECTION
POWRL
VCTRLA VCTRLB
VMUT2 VMUT1
AMUT
PLLSTB
PLLSDA
PLLCLK
TUMUT
~SD
~STEREO
NU
SELMUTE
SELCLK
SELSDO
~DIRRST
~DIRCS
~DSPFSC
~DSPRST
~DSPCS
NU
RESET
PROTECT
VOLH
BAND
NU
NU
MCRDY
MCSDI
MCSDO
MCCLK
~MCRST
HPMUT
HPIN
SPBRL
SEC1H
SPACSRL
SPAFRL
NU
AVSS
AVREF1
VSS1
THERMPRO
DSP_SDI
DSP_DA
NU
PURE POW
CMPRL
NU
DSP_CLK
NU
DIRINT1
~POFF
DIRINT0
~FINTREQ
~INTREQ ~RDSCLK VSS0 VDD0
X2
X1 INIT1
TEST/VPP XT2 XT1 RDSDATA
RDSSIG
VDD0 AVDD
INIT2 INIT3
13
FCS 13
RESET 144
7
+B
6
SCS 135
MUTE
RL242
RL241
CB
CR
Y
OUT
VIDEO IN1
CB
CR
Y
VIDEO IN2
CB
CR
Y
R6381,Q6313
THERMAL
DETECTION
CIRCUIT
Q6407
+22V
Q6405
78M12
POWER SUPPLY FOR
VIDEO SECTION
+12V
16
2
1
Q181
BU1924FS
RDS
DEMODULATOR
4
3
INTREQ 3
FINREQ 16
13
12
9
8
11
10
INT 1
INT0 80
6
5
14
15
NU: NO USE
CDTT/SDA 23
COMPONENT VIDEO
Q7006
Q7007
MPP TYPE
ONLY
2
1
SCDOUT 136
CDTO 20
8
9
12
11
21 CCLK/SCL
FA1, FSCDIO 4
SCDIN 136
FAO, FSCCLK 6
SCCLK 142
22 CDTT/SDA
POWER SUPPUY FOR
AMPLIFIER SECTION

Onkyo HT-R520 Specifications

General

Brand	Onkyo
Model	HT-R520
Category	Receiver
Language	English